$($a$)$ Equilibrium isotherm data for adsorption of phenol from waste water using activated carbon are as follows:

$\backslash$table$[[C($kg phenol$/$m solution$),0\mathrm{.}322,0\mathrm{.}117,0\mathrm{.}039,0\mathrm{.}0061,0\mathrm{.}0011],[q($kg phenol$/$kg carbon$),0\mathrm{.}150,0\mathrm{.}122,0\mathrm{.}094,0\mathrm{.}059,0\mathrm{.}045]]$

Determine the Freundlich isotherm constants.